Serum fetuin-A/alpha2-HS-glycoprotein in human pregnancies with normal and restricted fetal growth
Despina D Briana1, Maria Boutsikou, Demetrios Gourgiotis
1Second Department of Obstetrics and Gynecology, Athens University Medical School, Athens, Greece.
Insights
Serum fetuin-A levels are similar in mothers, fetuses, and neonates, regardless of intrauterine growth restriction (IUGR). Maternal and fetal fetuin-A concentrations correlate, suggesting passive transfer across the placenta.
Area of Science:
- Perinatology
- Biochemistry
- Developmental Biology
Background:
- Human fetuin-A is a key glycoprotein involved in vascular pathology and bone metabolism.
- Intrauterine-growth-restricted (IUGR) pregnancies are linked to low birth weight and future metabolic syndrome.
- Understanding fetuin-A's role in IUGR is crucial for predicting long-term health outcomes.
Purpose of the Study:
- To compare circulating human fetuin-A concentrations in mothers, fetuses, and neonates.
- To investigate fetuin-A levels in both intrauterine-growth-restricted (IUGR) and appropriate-for-gestational-age (AGA) pregnancies.
Main Methods:
- Prospective measurement of serum fetuin-A in 40 mothers and their neonates (20 IUGR, 20 AGA).
- Fetal fetuin-A levels assessed via doubly-clamped umbilical cord samples.
- Neonatal samples collected on postnatal days 1 (N1) and 4 (N4).
Main Results:
- No significant differences in fetuin-A concentrations were found between IUGR and AGA groups.
- Maternal, fetal, and neonatal fetuin-A levels did not differ significantly within either group.
- Positive correlations observed between maternal and fetal/neonatal fetuin-A in AGA and IUGR groups.
Conclusions:
- Circulating fetuin-A concentrations are comparable between IUGR and AGA pregnancies.
- Similar maternal and fetal fetuin-A levels suggest passive transplacental transfer.
- Fetuin-A levels do not appear to be a distinguishing biomarker for IUGR in this cohort.
Objective:
To investigate circulating concentrations of human fetuin-A (important fetal glycoprotein, involved in vascular pathology and bone metabolism) in mothers, fetuses and neonates from intrauterine-growth-restricted (IUGR, associated with low bone mass at birth and metabolic syndrome in adult life) and appropriate-for-gestational-age (AGA) pregnancies.
Methods:
Serum fetuin-A concentrations were prospectively measured in 40 mothers, the doubly-clamped umbilical cords (representing fetal state) and their 20 IUGR and 20 AGA full-term neonates on postnatal day 1 (N1) and 4 (N4).
Results:
No significant differences in fetuin-A concentrations were observed between groups, or between maternal, fetal and neonatal samples in both groups. In the AGA group, maternal fetuin-A concentrations positively correlated with fetal and N1 ones (r = 0.599, p = 0.005 and r = 0.469, p = 0.037, respectively). In the IUGR group, maternal fetuin-A concentrations positively correlated with N4 ones (r = 0.541, p = 0.014).
Conclusion:
Serum fetuin-A concentrations do not differ between IUGR cases and AGA controls. Maternal and fetal fetuin-A concentrations are similar and positively correlated, indicating the likelihood of passive transplacental transfer of this substance.
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